#include <cstdio>
#include <cstring>
#include <cmath>
#include <iostream>
#include <algorithm>
#include <vector>
#include <stack>
#include <sstream>
#include <map>
#include <set>
#include <string>
using namespace std;
typedef long long ll;
#define mem(a,b) memset(a,b,sizeof(a))

bool ch[20005];
int main()
{
    int t,n,m;
    int a,b;
    int aa,bb;
    cin >> t;
    while (t--)
    {
        mem(ch,0);
        ch[1]=1;
        aa=0;
        bb=0;
        scanf("%d",&n);
        vector<int>v[105][15];
        vector<int>ans;
        ans.push_back(1);
        for(int i=1;i<=n;++i)
        {
            cin >> m;
            for(int j=1;j<=m;++j)
            {
                scanf("%d %d",&a,&b);
                aa=max(aa,a);
                bb=max(bb,b);
                v[a][b].push_back(i);
            }
        }
        for(int i=1;i<=aa;++i)
        {
            for(int j=1;j<=bb;++j)
            {
                int flag=0;
                for(vector<int>::iterator it=v[i][j].begin();it!=v[i][j].end();++it)
                {
                    if(ch[*it])
                    {
                        flag=1;
                        break;
                    }
                }
                if(flag)
                {
                    for(vector<int>::iterator it=v[i][j].begin();it!=v[i][j].end();++it)
                    {
                        if(!ch[*it])
                        {
                            ans.push_back(*it);
                            ch[*it]=1;
                        }
                    }
                }
            }
        }
        sort(ans.begin(),ans.end());
        for(vector<int>::iterator it=ans.begin();it!=ans.end();++it)
        {
            printf("%d", *it);
            if(it!=ans.end()-1)printf(" ");
            else cout << endl;
        }
    }
    return 0;
}